China - Ningbo Water Management Project : environmental impact assessment (Vol. 4 of 5) : Ningbo City Zhougongzhai (Jiaokou) Reservoir Water Diversion and Urban Water Supply Ring Network Sub-Project

E999 VOL. 4 World bankl; (ian I'. Ninabo City Water Environment Constructioln Project by Utilizing World Bank- Loan Ningbo City Zhougonigzhai (Jiaokou) Reservoir Water Diversion and Urban Water Supply Ring Netvork Sub-Project Environmental Impact Report (For Approval) Chiniese Research Academyv of Environmental Sciences  k I I I I I I I I I  World bank loan Ningbo City Water Environment Construction Project by Utilizing World Bank Loan Ningbo City Zhougongzhai (Jiaokou) Reservoir Water Diversion and Urban Water Supply Ring Network Sub-Project Environmental Impact Report (For Approval) Chinese Research Academy of Environmental Sciences November 2004  -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  Name of project: Ningbo City Water Environment Construction Project by Utilizing World Bank Loan Ningbo City Zhougongzhai (Jiaokou) Reservoir Water Diversion and Urban Water Supply Ring Network Sub-Project Environmental assessment document: Environmental Impact Report (for approval) Client: Ningbo Water Supply Company Assessment organization: Environmental Impact Assessment Center of Chinese Research Academy of Environmental Sciences Environmental impact assessment certificate: GHPZJZ No.1001 President and legal representative: Meng Wei (Researcher) Specialized environmental assessment agency:Environmental Impact Assessment Center of Chinese Research Academy of Environmental Sciences Person in charge of the project: Liu Xiaoyu (Senior Engineer), Chinese Research Academy of Environmental Sciences Bao Weihong (Senior Engineer), Ningbo Environmental Protection Science Research & Design Institute Person in charge of technology: Shu Jianmin (Researcher) Technical examination: Li Yanwu (Associate Researcher) Cooperation organization:Ningbo Environmental Protection Science Research & Design Institute Environmental impact assessment certificate: GHPZJZ No.2004  I  Major Participants and Qualifications Assessment Name Discipline Job title Work permit No. organization 5 . . ~~~~Environmental Liu Xiaoyu Senior Engineer A10010040 ______________ engineenng Environmental > Shu Jiannrin t Researcher A10010021 cn> engineering Associate Zhang Linbo ecology A 10010026 researcher 4 Li. Xi. ochun Environmental Associate o Liu Xiaochun A10010063 E3 assessment researcher Environmental Bao Weihong Engineer A20040003 assessment Environmental Bi Yulong Senior engineer A20040006 engineenng . tl ,, Environmental Luo Deyu Engineer A20040016 * eo . assessment >. - Environmental Song Xianying Engineer A20040013 engineenng M 0  I I I I i I I i I  1.0 General - - --------------------------------------------------------- ------- - 1.1 Construction background and project origin----------------------------------------------------------------- 1.2 Project undertaker and necessity and significance of project construction---- 1.2.1 Project undertaker ---------------- - ------- ------ - - --- ---- -- 3 1.2.2 Significance and necessity of project construction-------------------------3 1.3 Policy, laws and regulations and institutional framework------ --------------------------------------------6 1.3.1 Domestic environmental assessment procedure -------- ----------------6 1.3.2 Safeguard policy of World Bank---------------------------------------------------------- 1.3.3 Related international environmental treaties to and on which China has acceded to or signed -------9 1.4 Basis of preparation---------------------------------- 1.5 Assessment grade and scope ------------------------------------------------------------------- ----------- 11 1.5.1 Assessment grade ------------------------------------------------------------------ 1 1.5.2 Assessment range -------------------- -- ------------ 12 1.6 Assessment standard ------ - - -----------------------------13 1.6.1 Environmental quality standard--- ------------------------------------------------13 1.6.2 Discharge standard of pollutants -------------------- ----------------------15 I .7Pollution control and environmental protection objective -----------------------16 1.7.1 Pollution control and environmental protection objective ------------- ----16 1.7.2 Water environment function division and major environmentally sensitive points ----- 16 1.8 Major technologies and methods adopted in the assessment --------------------------------18 1.9 Brief introduction of environmental assessment work group----- ------------------------- 19 1.9.1 Project organization structure----------------------------------- ---------19 1.9.2 Brief introduction of environmental assessment organization - ------- - ----- ------19 2.0 General situation of loan project ------------------------------------------------------------------------------------21 2.1 Brief introduction of loan project and project composition ----------------------- 21 2.2 Project scale and construction objective ----- -- ------- 22 2.2.1 Supply and demand balance plan--- - - - -22 2.2.2 Project scale--- ------------- ----------------------------------- 23 2.2.3 Construction objective --------------------------------------------------------- 23 2.3 Project content, process flow and main technical indices ------------------------------ 24 2.3.1 Raw water catchment project-water catchment tower ------------------------------24 2.3.2 Raw water conveyance work --------------------------------- 25 2.3.3 Water purification plant work-------- ------------------------------------- 26 2.3.4 Clean water conveyance main pipe ------------------------- ------- 32 2.3.5 Urban water distribution ring network - ------------- ---------------32 2.4 Construction method and construction plan -------------------- ------------------- 33 2.4.1 Construction condition------------------------------------------------ 33 2.4.2 Construction plan --------------- -- --------------- ---- 35 2.4.3 Construction method------------------------------------------------------------------------------------------------ 36 2.5 Project pollution sources and discharge of pollutants--------------------------------- ----------------- 44 2.5.1 Raw water catchment and conveyance work --------------------------------------- ------------- 44 2.5.2 Water purification plant project --------------------------------------------------------------------------------- 45 2.5.3 Clean water conveyance main pipe project and urban water distribution ring network project-------- 46 3.0 General situation of regional environment for the loan project --------------------------------------------------48 3.1 Natural environmental condition -------------------------------------------------------------------------------48 3.1.1 Geographical location-------------------------------------------------------------------------------------------- 48 3.1 .2 Landforrn and geomorphy- - ---------------------------------------------------------------------------------------- 48 3.1.3 Engineering geological condition -------------------------------------------- 49 3.1.4 Earthquake ----------------------------------------------------------------- - -49 3.1.5 Climate and weather -------------------------------------------------------------- 49 3 .6 General situation of river water system ---------------------------------------------------------------------------- 50  3.1.7 Water development within the basin------------------55 3.1.8 Water resource demonstration of Zhougongzhai and Jiaokou Reservoir Water Diversion Project -----56 3.2 Overview of social enviroment ------------------ --------------------------- 73 3.2.1 Administrative division and population----------------------------------------- 73 3.2.2 Outline of Social economy --------------------------------------- ------------- 73 3.2.3 Public facility--------------- - - - ----------- _ 75 3.2.4 Urban character and development objective -------------------------------------- -------- 76 3.2.5 Present situation of urban water conservancy and development objective-- -------- ------ 80 3.2.6 Ningbo city water supply situation and planning - -- ---- -- --------- 81 3.2.7 Municipal drainage and planning ----- ---------------------- ------------89 3.3 General situation of quality of life - ---------------------------------------------- 92 3.4 Cultural relic protection-------------------93 3.5 People's health- ------ -----------------------------93 3.6 Overview of ecological enviroment-------------------- ----------------------93 3.6.1 Overview of Ningbo ecological environment-- -- --- 93 3.6.2 Overview of ecological environment of Yanzhou district ------------------ -----94 3.6.3 Investigation and evaluation for the present situation of hydrobiont in this environmental assessment 95 3.7 General situation of pollution sources -- ----- ---- 99 3.7.1 Pollution situation in the upper reaches of Jiaokou Reservoir ---- ------99 3.7.2 Pollution source between dam of Zhougongzhai Reservoir and Jiaokou Reservoir ----101 3.7.3 Pollution sources in the lower reaches of Jiaokou Reservoir--- -------- ----101 3.8 Present situation of regional environmental quality -